"These are by far the best rail covers I have found and have used, Far better than the Magpul's I bought and used for a while. I have tried at least 10 other brands and none have been as low profile and as comfortable as these Surefire rail covers. They are easy to trim and piece together for using with all kinds of setups with all kinds of accessories. If your undecided on which rail covers to go with, Give these a try and you'll likely find you will never by another brand or style"